HS403C is a solar and battery powered 20mm micro sight designed for rifle and carbine applications. HS403C features Holosun’s Red Super LED with 50k hour battery life, 10 daylight and 2 night vision compatible reticle intensity settings. Its housing is made from 6061 aluminum and includes both a lower 1/3 co-witness mount (1.63”) and a low mount (.75”) for low-comb height rifle applications.
HS403C is unique in that it is always on and ready. If there is ambient light available it will power the HS403C even without a battery. Additional features include Shake Awake technology, digital buttons for setting changes, rubber lens covers, and a side-mounted battery tray for the 2032 battery. HS403C is a versatile sight for users of all levels.


2 MOA Dot Reticle
Up to 50,000 Hours Battery Life (Setting 6)
12 Brightness Setting: 10 DL & 2 NV Compatible
Convenient Tray Battery Compartment
Parallax-free & Unlimited Eye Relief
| Reticle | 2 MOA Dot |
| Light Wavelength | 650nm |
| Reticle Color | Red |
| Parallax Free | Yes |
| Unlimited Eye Relief | Yes |
| Magnification | 1x |
| Multi-Coatings | Yes |
| Power Source | Solar & Battery |
| Battery Type | CR2032 |
| Battery Life (Hours) | 50000 |
| Brightness Setting | 10 DL&2 NV |
| Window Size | 20mm Diameter |
| Dimension (in) | 2.45×1.43×1.6 |
| Weight (oz) | 2.82 |
| Housing Material | 6061 T6 Aluminum |
| Surface Finish | MAO |
| Adjustment per Click | 0.5 MOA |
| W&E Travel Range | ±50 MOA |
| Storage Temperature | -40℃~70℃ |
| Working Temperature | -30℃~60℃ |
| Submersion | IP67 |
| Vibration | 1000G |
Lower 1/3 Cowitness Mount
Low Profile Mount
T10 L Key
Rubber Cover
User Manual
CR2032 Battery
Lens Cloth